Approximate 2-hop neighborhoods on incremental graphs: An efficient lazy approach
Summary: Lazy-update algorithm for approximate 2-hop neighborhoods under edge insertions, achieving O(1/ε) amortized updates and relative error ≤ ε for random input sequences. Characterizes adversarial worst-cases (necessitating girth ≤4), empirically confirms robustness on social graphs, and composes with sketches to support neighborhood-size, Jaccard and union/intersection queries. (summarized by gpt-5-mini on Feb 09 2026)
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Authors
- 1. Luca Becchetti (Sapienza University)
- 2. Andrea Clementi (University of Roma Tre)
- 3. Luciano Gualà (University of Roma Tre)
- 4. Luca Pepè Sciarria (University of Roma Tre)
- 5. Alessandro Straziota (University of Roma Tre)
- 6. Matteo Stromieri (University of Roma Tre)
BibTeX Citation
@article{becchetti_vldb25,
title = {{Approximate 2-hop neighborhoods on incremental graphs: An efficient lazy approach}},
author = {Becchetti, Luca and Clementi, Andrea and Gualà, Luciano and Sciarria, Luca Pepè and Straziota, Alessandro and Stromieri, Matteo},
journal = {PVLDB},
series = {{VLDB} '25},
volume = {18},
number = {11},
pages = {3937--3950},
doi = {10.14778/3749646.3749665},
url = {https://doi.org/10.14778/3749646.3749665},
year = {2025}
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| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 456 | Mergeable Summaries | 2012 | PODS | 0.0001791284 |
| 462 | Counting Triangles in Data Streams | 2006 | PODS | 0.00017807125 |
| 3,217 | Dynamic Spanning Trees for Connectivity Queries on Fully-dynamic Undirected Graphs | 2022 | VLDB | 7.5233036e-05 |
| 7,290 | Effective Indexing for Dynamic Structural Graph Clustering | 2022 | VLDB | 5.5643066e-05 |
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